/*
 * Copyright (C) 2017-2019 Dremio Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dremio.common.util;

import java.util.function.Function;
import java.util.stream.Collectors;
import com.google.common.collect.MoreCollectors;
public class DremioCollectors {
  public static <VALUE, KEY> java.util.stream.Collector<VALUE, ?, java.util.Map<KEY, VALUE>> uniqueGrouping(
    Function<VALUE, KEY> function
  ){
    return Collectors.groupingBy(function, MoreCollectors.<VALUE>onlyElement());
  }
}
